qwtcurvefitter(3) [debian man page]

QwtCurveFitter(3)						 Qwt User's Guide						 QwtCurveFitter(3)

NAME

       QwtCurveFitter -

       Abstract base class for a curve fitter.

SYNOPSIS

       #include <qwt_curve_fitter.h>

       Inherited by QwtSplineCurveFitter.

   Public Member Functions
       virtual QPolygonF fitCurve (const QPolygonF &polygon) const =0
       virtual ~QwtCurveFitter ()

   Protected Member Functions
       QwtCurveFitter ()

Detailed Description
       Abstract base class for a curve fitter.

Constructor &; Destructor Documentation
   QwtCurveFitter::~QwtCurveFitter () [virtual]
       Destructor.

   QwtCurveFitter::QwtCurveFitter () [protected]
       Constructor.

Member Function Documentation
   virtual QPolygonF QwtCurveFitter::fitCurve (const QPolygonF &polygon) const [pure virtual] Find a curve which has the best fit to a series of
       data points
       Parameters:
	   polygon Series of data points

       Returns:
	   Curve points

       Implemented in QwtSplineCurveFitter.

Author
       Generated automatically by Doxygen for Qwt User's Guide from the source code.

Version 5.2.2							  Mon Aug 1 2011						 QwtCurveFitter(3)

QwtPolygonFData(3)						 Qwt User's Guide						QwtPolygonFData(3)

NAME

       QwtPolygonFData -

       Data class containing a single QwtArray<QwtDoublePoint> object.

SYNOPSIS

       #include <qwt_data.h>

       Inherits QwtData.

   Public Member Functions
       virtual QwtDoubleRect boundingRect () const
       virtual QwtData * copy () const
       const QPolygonF & data () const
       QwtPolygonFData & operator= (const QwtPolygonFData &)
       QwtPolygonFData (const QPolygonF &)
       virtual size_t size () const
       virtual double x (size_t i) const
       virtual double y (size_t i) const

Detailed Description
       Data class containing a single QwtArray<QwtDoublePoint> object.

Constructor &; Destructor Documentation
   QwtPolygonFData::QwtPolygonFData (const QPolygonF &polygon) Constructor
       Parameters:
	   polygon Polygon data

       See also:
	   QwtPlotCurve::setData()

Member Function Documentation
   QwtDoubleRect QwtData::boundingRect () const [virtual, inherited] Returns the bounding rectangle of the data. If there is no bounding rect,
       like for empty data the rectangle is invalid: QwtDoubleRect::isValid() == false
       Warning:
	   This is an slow implementation iterating over all points. It is intended to be overloaded by derived classes. In case of auto scaling
	   boundingRect() is called for every replot, so it might be worth to implement a cache, or use x(0), x(size() - 1) for ordered data ...

       Reimplemented in QwtArrayData, and QwtCPointerData.

   QwtData * QwtPolygonFData::copy () const [virtual] Returns:
	   Pointer to a copy (virtual copy constructor)

       Implements QwtData.

   const QPolygonF & QwtPolygonFData::data () const Returns:
	   Point array

   QwtPolygonFData & QwtPolygonFData::operator= (const QwtPolygonFData &data)
       Assignment.

   size_t QwtPolygonFData::size () const [virtual] Returns:
	   Size of the data set

       Implements QwtData.

   double QwtPolygonFData::x (size_ti) const [virtual] Return the x value of data point i
       Parameters:
	   i Index

       Returns:
	   x X value of data point i

       Implements QwtData.

   double QwtPolygonFData::y (size_ti) const [virtual] Return the y value of data point i
       Parameters:
	   i Index

       Returns:
	   y Y value of data point i

       Implements QwtData.

Author
       Generated automatically by Doxygen for Qwt User's Guide from the source code.

Version 5.2.2							  Mon Aug 1 2011						QwtPolygonFData(3)